The patch adds short-form URI boot support to follow
UEFI Spec.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <[email protected]>
Cc: Siyuan Fu <[email protected]>
---
MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c | 72 ++++++++++++++++++++++++
1 file changed, 72 insertions(+)
diff --git a/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
b/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
index 35234ba..9ce841e 100644
--- a/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
+++ b/MdeModulePkg/Library/UefiBootManagerLib/BmBoot.c
@@ -1182,6 +1182,72 @@ BmExpandFileDevicePath (
}
/**
+ Expand URI device path node to be full device path in platform.
+
+ @param FilePath The device path pointing to a load option.
+ It could be a short-form device path.
+ @param FullPath Return the full device path of the load option after
+ short-form device path expanding.
+ Caller is responsible to free it.
+ @param FileSize Return the load option size.
+
+ @return The load option buffer. Caller is responsible to free the memory.
+**/
+VOID *
+BmExpandUriDevicePath (
+ IN EFI_DEVICE_PATH_PROTOCOL *FilePath,
+ OUT EFI_DEVICE_PATH_PROTOCOL **FullPath,
+ OUT UINTN *FileSize
+ )
+{
+ EFI_STATUS Status;
+ UINTN Index;
+ UINTN HandleCount;
+ EFI_HANDLE *Handles;
+ EFI_LOAD_FILE_PROTOCOL *LoadFile;
+ VOID *FileBuffer;
+
+ EfiBootManagerConnectAll ();
+ Status = gBS->LocateHandleBuffer (ByProtocol, &gEfiLoadFileProtocolGuid,
NULL, &HandleCount, &Handles);
+ if (EFI_ERROR (Status)) {
+ HandleCount = 0;
+ Handles = NULL;
+ }
+
+ FileBuffer = NULL;
+
+ for (Index = 0; Index < HandleCount; Index++) {
+ Status = gBS->HandleProtocol (Handles[Index], &gEfiLoadFileProtocolGuid,
(VOID *) &LoadFile);
+ ASSERT_EFI_ERROR (Status);
+
+ FileBuffer = NULL;
+ Status = LoadFile->LoadFile (LoadFile, FilePath, TRUE, FileSize,
FileBuffer);
+ if (Status == EFI_BUFFER_TOO_SMALL) {
+ FileBuffer = AllocatePool (*FileSize);
+ if (FileBuffer == NULL) {
+ break;
+ }
+ Status = LoadFile->LoadFile (LoadFile, FilePath, TRUE, FileSize,
FileBuffer);
+ }
+
+ if (!EFI_ERROR (Status)) {
+ *FullPath = DuplicateDevicePath (DevicePathFromHandle (Handles[Index]));
+ break;
+ }
+
+ if (FileBuffer != NULL) {
+ FreePool (FileBuffer);
+ }
+ }
+
+ if (Handles != NULL) {
+ FreePool (Handles);
+ }
+
+ return FileBuffer;
+}
+
+/**
Save the partition DevicePath to the CachedDevicePath as the first instance.
@param CachedDevicePath The device path cache.
@@ -1718,6 +1784,12 @@ BmGetLoadOptionBuffer (
// Expand the File-path device path
//
return BmExpandFileDevicePath (FilePath, FullPath, FileSize);
+ } else if ((DevicePathType (FilePath) == MESSAGING_DEVICE_PATH) &&
+ (DevicePathSubType (FilePath) == MSG_URI_DP)) {
+ //
+ // Expand the URI device path
+ //
+ return BmExpandUriDevicePath (FilePath, FullPath, FileSize);
} else {
for (Node = FilePath; !IsDevicePathEnd (Node); Node = NextDevicePathNode
(Node)) {
if ((DevicePathType (Node) == MESSAGING_DEVICE_PATH) &&
--
2.7.0.windows.1
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